Air compressor



J. JONES 1,946,857

AIR COMPRESSOR Feb. 13, 1934.

Filed NOV. lO, 1932 3 Sheets-Sheet `l Janes,

mj W

Feb. 13, 1934. J. M. JONES Y 1,946,857

AIR COMPRESSOR Filed Nov. 10, 1932 3 Sheets-Sheet 2 #j Fly. l0.

J M. Janes,

www

Fqb. 13, 1934. J M JONES 1,946,857

AIR COMPRESSOR Filed Nov. 10. 1932 3 Sheets-Sheet 3 Patented Feb. 13, 1934 UNITED STATES PATENT' OFFICE AIR COMPRESSOR Application November 10, 1932 Serial No. 642,085

6 Claims.

The invention relates to air compressors and has for its principal object the provision of an air pump or compressor that is reasonable in cost of manufacture, and economical in operation, as well as being effective in compressing air and storing lt for use.

A further object of the invention is the provision of an air compressor that is contained within the tank for holding the air under compression, thus contributing not only to economy in the operation of the apparatus but economy in space occupied by the installation.

The invention will be described in detail hereinafter and will be found illustrated in the accompanying drawings, in which Figure 1 is a View showing a tank or container for compressed air broken away and in section and the compression apparatus shown in plan,

Figure 2, is a transverse sectional view of the tank and the apparatus,

Figure 3 is a fragmentary transverse sectional View on an enlarged scale on a plane indicated by the line 3 3 of Figure 1,

Figure 4 is a similar view on a plane indicated by the line 4-4 of Figure l,

Figure 5 is a sectional detail on a plane indicated by the line 5-5 of Figure 2, parts being broken away and in section,

Figure 6 is a sectional view on a plane indicated by the line 6-6 of Figure 5,

Figure 7 is a fragmentary sectional view on a plane indicated by the line 7-7 of Figure 1,

Figure 8 is a detail fragmentary view illustrating one of the intake valve structures, and

Figures 9 and 10 detail views of the pivoted dogs for directing the operation of the valve controlling exhaust port.

In the drawings similar reference characters are used to designate corresponding parts in all of the views.

The air compressor, as stated, is preferably mounted Within the container or tank used for holding the air under compression, designated l0, and employs oppositely disposed channeled members l1 that are secured to one cf the walls of the tank, and angularly disposed to one another as best shown in Figure 1, the free ends of said channel members being supported by brackets lla secured to another wall of the tank. The channeled members 11 are each provided with intake ports 12 and an exhaust port 13, each intake port 12 being in communication with a pipe 14 through a valve housing 15 that has communication with said pipe and the inlet port.

The channel members 11 have their open sides oppositely disposed, and slidably mounted therein are tubular members or sleeves 16 that are held for slidable disposition in said channeled members by means of projections 17 thereon that engage in offset grooves 18 in the channel 60 members. A piston member 19 is reciprocally mounted in the adjacent open end of the sleeves or tubular members 16, and 20 designates a piston rod secured to the piston 19 and slidable in opposite walls of the tank or container 10, said piston rod being actuated by means of a motor 21 in any suitable manner. 22 designates stuffing boxes to prevent escape of air through the slidable connection between the rod 20 and the f walls of the tank. The sleeves or tubular members 16 are provided with recesses 22 in their ends in Which are mounted compression strips 23 that are held in engagement with the inner walls of the channeled members 11 by means of springs 24. 25 indicates compression rings 75 mounted in grooves 26 in the piston member 19.

It will be apparent that when the piston 19 is moved from the full line position shown in Figure 1 to the dotted line position shown in Figure l, that the sleeves or tubular members 16 will also move therewith and will be drawn away from one another by reason of the angular disposition of the channeled members 11 and the engagement of the projections 17 in the oiset grooves 18 that will create a partial vacuum in 85 said sleeves or tubular members 16 between the ends of the piston member 19 within said sleeves and the inner walls o'f the channeled members 11, and when the sleeves 16 are in outermost position so that the ports 27 therein communicate 90 with the intake ports 12 air will be drawn into the chambers formed within the tubular members by the recession of the ends of the piston member, through the pipes 14, and when the piston member 19 is moved to its former position so that 95 the ports 27 in the sleeves are alined with the ports 13 the compressed air within the members will be discharged into the tank or container 10, the compression being brought about by the sleeves moving toward one another to restrict the spaces within the sleeves.

For proper operation of the apparatus it is required that valves be provided to close the intake ports except at the moment when the sleeves 16 are in position to receive air, as heretofore 105 described, and also valves are provided to control exhaust ports after the compressed air has been discharged therethrough by the operation of the device as heretofore described.

The valves for control of the intake ports 12 110 are of the gate type comprising a plate 28 slidably mounted in the valve casing 15 and having an opening 29 to register with the intake port 12 and the pipe 14, and normally held in position so that said opening 29 is out of registry by means of a spring actuated rod 30, 31 desig nating a spring mounted in a housing 32. The rod 30 is secured as shown at 33 to a lever 34 pivotally secured to the valve 28 as shown at 35 and fulcrumed at 36 on a bracket 37 secured to the channeled member 11. 38 indicates a lug or projection on each of the tubular members or sleeves 16 that engage the free ends oi the levers 34 when the sleeves are moved to the position so that the ports 27 in the sleeves are alined with the intake ports l2 and actuate levers 34 to move plate 28 so that their openings 29 regis ter with ports 12 and 27 to permit ingress of air to the enlarged chambers in the sleeves to overcome the partial vacuum created therein as hereinbefore described.

The valves for controlling the exhaust ports 13 have also slidable gate valves, designated 39, and mounted within a recess 4G in each of the tubular members 16. 41 designates an opening in the valve member 39 that is adapted to register with the opening 13 in the channeled member 11, and normally held in said position by means of a spring 42 mounted in a casing 43 and engaging the end of the valve stem 44.

It is essential that the valve 39 close the ports 27 in the sleeves 16 to hold the air under compression in said sleeves until thesleeves are in their positions so that the ports 27 aline with the ports 13 and to accomplish this object the following provisions are made: 45 designates rods secured by means or brackets 46 to the channeled members 11 and arranged substantially parallel therewith and engaging a pin or projection 47 on the valve stem 44. When the piston member 19 and sleeves 16 are being moved towards the intake ports 12 the pin or projection 47 are on the inner sides of said rods 45 adjacent to the channeled members 11 so that the valves are in the open position. To close the valves so that the ports 27 will be sealed during compression it is necessary that the valves be held against compression exerted by the spring 42, and for this purpose the pins or projections 47 will be moved to the outer sides of the rods 45. To accomplish this purpose pivoted dogs 48 are provided on the ends of the rods 45 and pivoted as shown at 49, 50 designating a spring secured to each of the rods 45 and engaging the pivoted dog 48 to normally hold it out of alineinent with the axis or" the rod 45 so that when the pin engages said dog near the end of the stroke of the piston rod 20 the valve will be moved against the tension of the spring 50, and when it passes beyond the end of the dog it will be brought to its former position so that during the return stroke of the piston rod the pin will be caused to ride on the outer side of the rod 45 and thus close the valve against compression of the spring. When the piston rod reaches the extremity of the compression stroke the pins 47 will be moved from engagement with the rod 45 so that the valves will be opened the action oi the springs 42 and as in this position the tubular members or sleeves will be in position for exhaust, the compressed air within the chambers in the sleeves will escape through the exhaust openings 13. To limit the pivotal movement of the dogs 48 a lug or projection 51 is provided on the end of the rod 45 that is engaged by a lug or projection 52 on the dog 48.

What is claimed is:

l. .fin air compressor, comprising channeled members angularly arranged, tubular members slidably mounted in said channeled members, a piston member slidably mounted in adjacent ends or said tubular members, means to actuate said piston and tubular members, the channeled menibers provided with intake and exhaust ports, spring closed valves mounted on said channeled members for controlling the intake ports, means controlled by the tubular members to open said valves, other spring closed valves mounted on said tubular members for controlling the exhaust ports, and means mounted on said channeled members to open the last mentioned valves.

2. An air compressor, comprising channeled members angularly arranged, tubular members slidably mounted in said channeled members, a piston member slidably mounted in adjacent ends oi said tubular members, means to actuate said piston and tubular members, the channeled members provided with intake and exhaust ports, slide valves slidably mounted on said channeled members for controlling the intake ports, 1evers fulcrumed on said channeled members and pivotally secured to said valves, projections on said tubular members to engage the levers and actuate the valves into opened positions, spring means operating to normally close the valves, other valves slidably mounted on said tubular members for controlling the exhaust ports, spring means tor normally closing the last mentioned valves, and means mounted on said channeled members to open said last mentioned valves.

3. An air compressor, comprising channeled members angularly arranged, tubular members slidably mounted in said channeled members, a piston member slidably mounted in adjacent ends of said tubular members, means to actuate said piston and tubular members, the channeled members provided with intake and exhaust ports, spring closed valves slidably mounted on said channeled members for controlling the intake ports, means controlled by the tubular members to open said valves, other valves slidably mounted on said tubular members for controlling the exhaust ports, spring means normally closing said valves, projections on said exhaust valves, rods mounted on said channeled members for engaging said projections, and a spring actuated dog pivoted on each rod to direct said projection into engagement with the rod for l.

opening the valves.

4. In an air compressor, channeled members angularly arranged and having longitudinal grooves in one of their side Walls, tubular members slidably moiuited in said channeled members and having projections engaging in said grooves, a piston member slidably mounted in adjacent ends or said tubular member, a piston rod secured to said piston member, means to actuate said piston rod, the channeled members provided with intake and exhaust ports, valves mounted on the channeled members normally closing the intake ports, means to actuate the valves, other valves mounted on the tubular members normally closing the exhaust ports, and means to actuate the last mentioned valves.

5. In an air compressor, an air storage tank, channeled members mounted in said tank and angularly arranged, said members provided with longitudinal grooves in one of their side walls,

tubular members slidably mounted in said channeled members and having projections engaging in said grooves, a piston member slidably mounted in adjacent ends of said tubular member, a piston rod slidably mounted in opposite Walls of said tank and secured to said piston member, means to actuate said rod, the channeled members being provided with intake and exhaust ports, valves for controlling the opening and closing of said ports, means to actuate said valves, and conduits communicating with the intake ports and extending out of the tank.

6. An air compressor tank containing air under pressure, with an air pump or compressor having channeled members mounted in said tank and angularly arranged, said members provided with longitudinal grooves in one of their side walls, tubular members slidably mounted in said channeled members and having projections engaging said grooves, a 'piston member slidably mounted in adjacent ends of said tubular member, a piston rod slidably mounted in opposite Walls of said tank and secured to said piston member, means to actuate said rod, the channeled members being provided with intake and exhaust ports, valves for controlling the opening and closing of said ports, means to actuate said valves, and conduits communicating with the intake ports and extending out of the tank.

JAMES M. JONES. 

